Problem A
Simple Addition — Problem Statistics

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Submissions	13665
Accepted submissions	5110
Submission ratio	37.39%
Authors	5017
Full solves [?]	4375
Full solve Ratio	87.20%

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.01 s	Bash	2023-09-07 08:20:23
2	Thomas Feld	0.01 s	Bash	2023-09-11 12:04:32

#	User	Runtime	Language	Date
1	Khin Nyunt	0.02 s	C#	2016-05-28 18:16:39
2	Faisal Rahman	0.02 s	C#	2017-11-14 05:16:24
3	Mustafa Dinler	0.03 s	C#	2016-07-12 14:06:59
4	Ugnius Skučas	0.03 s	C#	2016-10-15 13:47:20
5	Duelene Olson	0.03 s	C#	2017-04-28 21:09:50
6	Minh NguyenHuynh	0.03 s	C#	2018-12-20 18:09:20
7	Samee Mushtak	0.03 s	C#	2021-03-07 02:17:24
8	Matt Bailey	0.04 s	C#	2018-01-21 22:09:47
9	Joep Lijnen	0.04 s	C#	2019-09-28 17:16:28
10	Göran Andersson	0.04 s	C#	2022-05-14 18:09:57

#	User	Runtime	Language	Date
1	Mohideen Imran Khan	0.01 s	Common Lisp	2019-11-08 09:28:47
2	David Cawthon	0.03 s	Common Lisp	2019-05-12 16:36:49
3	Dan Rachou	0.05 s	Common Lisp	2023-10-28 22:29:38

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.02 s	F#	2022-09-21 18:49:52
2	Lucas Venø Hansen	0.08 s	F#	2025-02-12 13:30:07

#	User	Runtime	Language	Date
1	selyann berrada	0.00 s	Go	2024-12-29 05:43:32
2	Oli Gustafsson	0.05 s	Go	2022-06-12 10:39:21
3	Silas Ulander	0.05 s	Go	2022-11-02 16:29:44
4	Markus Hansson	0.06 s	Go	2022-11-01 14:29:34
5	Simon Fontana Oscarsson	0.06 s	Go	2022-11-05 19:49:33
6	Wei Guo	0.06 s	Go	2022-11-07 10:51:02
7	Eric Martin	0.07 s	Go	2019-01-05 05:00:13
8	Krzysztof Gibuła	0.07 s	Go	2019-03-05 23:48:40
9	Scott Dauer	0.08 s	Go	2020-09-16 23:10:19
10	Norbert Voelker	0.08 s	Go	2021-05-03 13:10:52

#	User	Runtime	Language	Date
1	Patrik Lilja	0.01 s	Haskell	2016-05-01 18:50:55
2	Carl Agrell	0.01 s	Haskell	2016-09-16 20:26:41
3	Matthew Johnson	0.01 s	Haskell	2017-01-06 07:41:29
4	Johan Meier	0.01 s	Haskell	2017-01-11 00:34:17
5	John Grzechowiak	0.01 s	Haskell	2017-02-06 20:35:10
6	Viktor Kronvall	0.01 s	Haskell	2017-02-07 01:34:10
7	Kevin Martino	0.01 s	Haskell	2017-02-16 06:28:16
8	Andrew Mark Allen	0.01 s	Haskell	2017-03-02 23:03:02
9	Marcos Barbieri	0.01 s	Haskell	2017-03-06 23:27:18
10	Anthony Clark	0.01 s	Haskell	2017-04-16 17:26:24

#	User	Runtime	Language	Date
1	Pham Minh Tuan Bui	0.04 s	Java	2024-10-30 14:20:52
2	José Vander Meulen	0.05 s	Java	2018-05-14 23:12:29
3	Guangyi Zhou	0.05 s	Java	2024-12-13 16:24:09
4	Hidden user	0.05 s	Java	2026-02-12 04:16:51
5	Hidden user	0.06 s	Java	2016-04-26 02:14:28
6	Hidden user	0.06 s	Java	2016-04-28 14:39:00
7	William Fiset	0.06 s	Java	2017-02-19 02:21:06
8	Jason Leatherman	0.06 s	Java	2018-03-15 03:21:44
9	Sven Rönnbäck	0.07 s	Java	2020-12-11 19:06:49
10	Axel Nilsson	0.07 s	Java	2022-11-13 12:05:13

#	User	Runtime	Language	Date
1	Muhammad	0.05 s	JavaScript (Node.js)	2024-10-31 12:53:53
2	Victor Glimskog	0.05 s	JavaScript (Node.js)	2026-01-23 10:54:19
3	Ram Basnet	0.06 s	JavaScript (Node.js)	2018-10-05 04:32:44
4	Gurpartap Singh Bhatti	0.06 s	JavaScript (Node.js)	2019-04-28 08:56:08
5	Gurushant Gurushant	0.10 s	JavaScript (Node.js)	2023-04-24 22:44:10
6	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-12 08:08:55
7	Chris Wong	0.42 s	JavaScript (Node.js)	2021-03-15 01:06:41
8	Khin Nyunt	0.42 s	JavaScript (Node.js)	2021-11-30 15:47:38
9	Kevin Ma	0.43 s	JavaScript (Node.js)	2020-10-09 19:20:06

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-04-26 10:40:51
2	Ilmars Lacplesis	0.01 s	JavaScript (SpiderMonkey)	2018-04-12 19:36:37
3	Peter Kedemo	0.02 s	JavaScript (SpiderMonkey)	2016-05-27 22:31:34
4	Paul Leung	0.02 s	JavaScript (SpiderMonkey)	2017-02-28 12:33:46
5	Spencer Smith	0.02 s	JavaScript (SpiderMonkey)	2017-06-17 03:06:23
6	Bernard Perrin	0.03 s	JavaScript (SpiderMonkey)	2019-05-17 11:07:08
7	Peter Menyes	0.03 s	JavaScript (SpiderMonkey)	2021-09-06 21:34:47
8	Jimmy Gustafsson	0.03 s	JavaScript (SpiderMonkey)	2022-08-08 11:56:15
9	Zach Tschetter	0.05 s	JavaScript (SpiderMonkey)	2023-06-15 00:39:22
10	michael r lederle	0.10 s	JavaScript (SpiderMonkey)	2022-04-20 00:12:16

#	User	Runtime	Language	Date
1	Hidden user	0.36 s	Julia	2025-03-08 12:28:03
2	Danny Robinson	0.62 s	Julia	2023-06-22 16:22:19
3	Timothy Gaede	0.62 s	Julia	2024-06-13 06:33:42

#	User	Runtime	Language	Date
1	Jacob Huebner	0.15 s	Kotlin	2020-04-27 05:22:34
2	Johnny Baloney	0.16 s	Kotlin	2022-01-07 18:55:20
3	Mikael Hedin	0.18 s	Kotlin	2017-11-16 13:31:34
4	Thanh Le	0.18 s	Kotlin	2021-07-14 03:43:17
5	John Bowers	0.23 s	Kotlin	2018-02-27 19:45:03
6	Dayan Ruben Gonzalez	0.23 s	Kotlin	2020-09-27 22:25:10
7	Adam Rankin	0.24 s	Kotlin	2023-05-10 23:28:23
8	James WIlliams	0.25 s	Kotlin	2020-09-21 08:58:29
9	Zaw Myat	0.25 s	Kotlin	2024-01-15 14:07:08
10	Adam Koprowski	0.28 s	Kotlin	2020-08-21 20:19:51

#	User	Runtime	Language	Date
1	屏翰 张	0.03 s	Odin	2025-11-10 04:40:59

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.01 s	Perl	2025-09-13 15:33:45
2	Thomas Feld	0.01 s	Perl	2025-09-15 15:03:49
3	Adrian Borup	0.02 s	Perl	2024-10-27 18:40:27

#	User	Runtime	Language	Date
1	Dan Dumitriu	0.01 s	PHP	2021-12-02 22:14:49
2	Susanne Ragnemalm	0.01 s	PHP	2024-06-24 19:41:43

#	User	Runtime	Language	Date
1	Hadi Qovaizi	0.02 s	Prolog	2016-05-04 15:32:13
2	Andriy Zyevakov	0.02 s	Prolog	2017-07-16 20:58:10
3	Hakan Kjellerstrand	0.03 s	Prolog	2023-02-06 20:12:15

#	User	Runtime	Language	Date
1	Zohaib Ahmed	0.02 s	Python 2	2022-08-23 20:36:01
2	Graham Palmer	0.02 s	Python 2	2022-10-10 18:04:57
3	Christofer Ohlsson	0.03 s	Python 2	2016-04-26 07:18:23
4	Hidden user	0.03 s	Python 2	2016-05-14 05:05:35
5	Måns Olsson	0.03 s	Python 2	2016-05-22 16:13:06
6	Hidden user	0.03 s	Python 2	2016-05-24 15:25:05
7	Ko Hades	0.03 s	Python 2	2016-05-27 14:56:37
8	Erik Sillén	0.03 s	Python 2	2016-05-29 12:58:43
9	Bernhard Kartefla	0.03 s	Python 2	2016-06-05 17:19:53
10	Mohammad Sadeghi	0.03 s	Python 2	2016-06-07 07:02:47

#	User	Runtime	Language	Date
1	Wayne	0.02 s	Python 3	2016-05-02 00:21:02
2	Rick van Rheenen	0.02 s	Python 3	2016-05-08 18:56:15
3	Arnar Bjarni Arnarson	0.02 s	Python 3	2016-05-09 03:20:54
4	Hannes Kristján Hannesson	0.02 s	Python 3	2016-05-09 03:25:08
5	Sigurjón Freyr Viktorsson	0.02 s	Python 3	2016-05-09 14:42:01
6	Sam Henry	0.02 s	Python 3	2016-05-14 04:15:54
7	Nathan Collins	0.02 s	Python 3	2016-05-18 21:43:36
8	Noah Weninger	0.02 s	Python 3	2016-05-20 23:04:13
9	Zach Goldthorpe	0.02 s	Python 3	2016-05-20 23:05:50
10	Johnathan Parker	0.02 s	Python 3	2016-05-20 23:08:18

#	User	Runtime	Language	Date
1	Yung-Luen Lan	0.03 s	Ruby	2016-08-02 18:25:57
2	Chris Weston	0.03 s	Ruby	2016-09-28 02:39:02
3	Kellen Watt	0.03 s	Ruby	2017-02-09 01:10:07
4	Mehdi Maick	0.03 s	Ruby	2017-04-10 23:44:11
5	Mikee May Ojastro	0.03 s	Ruby	2017-06-08 08:42:20
6	Hidden user	0.03 s	Ruby	2017-10-13 00:32:15
7	John Bowers	0.03 s	Ruby	2018-02-27 19:37:28
8	Hidden user	0.04 s	Ruby	2018-10-30 18:26:53
9	Macdara mac an tSionnaigh	0.04 s	Ruby	2019-09-14 23:40:30
10	Erik Rydbert	0.05 s	Ruby	2016-08-02 10:42:35

#	User	Runtime	Language	Date
1	Adam Gustafsson	0.04 s	TypeScript	2025-11-10 20:58:47

#	User	Length	Language	Date
1	Thomas Feld	13	Bash	2023-09-11 12:04:32
2	Chenzhang Hu	13	Bash	2025-09-12 16:07:52

#	User	Length	Language	Date
1	Joey Pabalan	312	C	2025-10-31 01:25:40
2	Didrik Madheden	504	C	2021-01-27 11:17:21
3	Thibault Raffaillac	505	C	2017-09-18 18:07:05
4	Hidden user	586	C	2017-02-03 00:54:57
5	Caleb Kraglund	707	C	2024-10-11 17:13:31
6	Hidden user	749	C	2016-08-06 21:58:05
7	Wei Siang	751	C	2016-12-24 02:31:44
8	HSUTH	767	C	2016-12-25 07:21:16
9	Erick Saúl	791	C	2020-04-16 00:10:51
10	Wesley Stephanak	797	C	2019-02-06 06:27:20

#	User	Length	Language	Date
1	florist swe	163	C#	2024-12-06 23:46:15
2	Umar Rasyid	196	C#	2025-01-08 05:11:53
3	Esty Crow	213	C#	2023-03-09 03:37:54
4	Mark Nickelsen	243	C#	2025-11-28 13:30:51
5	svante	250	C#	2025-02-22 23:50:47
6	Anthony Ye	259	C#	2022-11-06 17:45:37
7	Simon Thillemann Nielsen	260	C#	2025-11-18 23:22:55
8	Ana María Esteva Sarralde	267	C#	2022-11-11 04:41:18
9	Klas af Geijerstam	271	C#	2017-04-18 13:04:17
10	Romario HUAMANI PACCAYA	285	C#	2024-09-29 21:34:05

#	User	Length	Language	Date
1	Taylor Rodríguez	273	C++	2025-05-10 05:15:50
2	Frans Meulenbroeks	291	C++	2026-01-28 14:19:39
3	Tyler Fernando	389	C++	2022-11-01 04:06:21
4	Yuval Ohapkin	417	C++	2017-04-25 22:06:02
5	Vladyslav Reznikov	423	C++	2025-03-09 17:28:26
6	Rafael Kristoforus Yanto	434	C++	2025-02-24 19:15:48
7	Ganapathy Sanath Balaji	435	C++	2019-08-14 16:08:19
8	Hoàng Bá Tuân	465	C++	2017-10-10 17:13:01
9	Trần Phạm Nam Khánh	470	C++	2021-12-26 18:15:18
10	Nguyen Thi Anh Tho	479	C++	2021-10-31 13:38:55

#	User	Length	Language	Date
1	Mohideen Imran Khan	25	Common Lisp	2019-11-08 09:28:47
2	Dan Rachou	95	Common Lisp	2023-10-28 22:29:38
3	David Cawthon	221	Common Lisp	2019-05-12 16:36:49

#	User	Length	Language	Date
1	Lucas Venø Hansen	158	F#	2025-02-12 13:30:07
2	Jacob Harris Cryer Kragh	744	F#	2022-09-21 18:49:52

#	User	Length	Language	Date
1	Theo Coyne Morgan	151	Go	2019-03-26 22:31:56
2	Markus Hansson	162	Go	2022-11-01 14:29:34
3	Simon Fontana Oscarsson	164	Go	2022-11-05 19:54:10
4	Oli Gustafsson	338	Go	2022-06-12 10:39:21
5	selyann berrada	342	Go	2024-12-29 05:43:32
6	Krzysztof Gibuła	345	Go	2019-03-05 23:48:40
7	Eric Martin	457	Go	2019-01-05 05:00:13
8	Dan Dumitriu	507	Go	2021-12-02 19:43:43
9	Norbert Voelker	617	Go	2021-05-03 13:10:52
10	Wei Guo	1139	Go	2022-11-07 10:48:02

#	User	Length	Language	Date
1	Rudy Matela	38	Haskell	2023-09-09 23:00:46
2	Tim Put	48	Haskell	2021-10-22 23:02:19
3	Ross Alvine	62	Haskell	2022-03-11 19:36:49
4	Matthew Gvasalia	62	Haskell	2023-08-25 18:46:26
5	Carl Agrell	66	Haskell	2016-09-16 20:26:41
6	Zach Tschetter	66	Haskell	2021-09-25 19:48:12
7	Hidden user	67	Haskell	2018-10-30 18:27:58
8	Anthony Clark	70	Haskell	2017-04-16 17:26:24
9	Markus Weller	70	Haskell	2019-03-21 00:55:15
10	Kevin Martino	73	Haskell	2017-02-16 06:28:16

#	User	Length	Language	Date
1	Hidden user	201	Java	2019-08-14 16:15:33
2	Sergey Jakobsen	220	Java	2020-11-13 01:59:01
3	Robby Tanay	226	Java	2017-12-05 05:29:05
4	Kinn Beredico	227	Java	2017-12-05 08:59:17
5	Harrison Shen	228	Java	2019-07-13 18:55:24
6	William Brigham	239	Java	2017-05-10 11:06:31
7	selyann berrada	239	Java	2024-09-04 21:24:46
8	Santiago Hincapie	242	Java	2019-02-02 17:27:09
9	Jason Liu	242	Java	2023-05-01 15:45:57
10	Ethan Fan	245	Java	2021-07-01 23:36:52

#	User	Length	Language	Date
1	Chris Wong	276	JavaScript (Node.js)	2021-03-15 01:06:41
2	Victor Glimskog	311	JavaScript (Node.js)	2026-01-23 10:54:19
3	Andoko Chandra	549	JavaScript (Node.js)	2020-10-12 08:08:55
4	Khin Nyunt	561	JavaScript (Node.js)	2021-11-30 15:47:38
5	Gurushant Gurushant	714	JavaScript (Node.js)	2023-04-24 22:44:10
6	Muhammad	770	JavaScript (Node.js)	2024-10-31 12:53:53
7	Kevin Ma	1086	JavaScript (Node.js)	2020-10-09 19:20:06
8	Ram Basnet	1314	JavaScript (Node.js)	2018-10-05 04:32:44
9	Gurpartap Singh Bhatti	1760	JavaScript (Node.js)	2019-04-28 08:56:08

#	User	Length	Language	Date
1	Zach Tschetter	44	JavaScript (SpiderMonkey)	2023-06-15 00:39:22
2	Jimmy Gustafsson	55	JavaScript (SpiderMonkey)	2022-08-25 22:14:46
3	michael r lederle	144	JavaScript (SpiderMonkey)	2022-04-20 00:12:16
4	Paul Leung	402	JavaScript (SpiderMonkey)	2017-02-28 12:33:46
5	Bernard Perrin	452	JavaScript (SpiderMonkey)	2019-05-17 11:07:08
6	Peter Menyes	479	JavaScript (SpiderMonkey)	2021-09-06 21:34:47
7	Spencer Smith	599	JavaScript (SpiderMonkey)	2017-06-17 03:06:23
8	Peter Kedemo	639	JavaScript (SpiderMonkey)	2016-05-27 22:31:34
9	Bjørn Chr. Soltvedt	660	JavaScript (SpiderMonkey)	2016-04-26 10:40:51
10	Ilmars Lacplesis	934	JavaScript (SpiderMonkey)	2018-04-12 19:36:37

#	User	Length	Language	Date
1	Danny Robinson	39	Julia	2023-06-22 16:22:19
2	Hidden user	105	Julia	2025-03-08 12:28:03
3	Timothy Gaede	137	Julia	2024-06-13 06:33:42

#	User	Length	Language	Date
1	Mohsen Dehbashi	101	Kotlin	2021-07-08 11:06:12
2	Dmitry Shostak	119	Kotlin	2019-08-28 19:19:25
3	John Bowers	122	Kotlin	2018-02-27 19:45:03
4	Troy Warmboe	122	Kotlin	2020-02-13 23:39:52
5	Hidden user	129	Kotlin	2019-08-14 16:23:50
6	Phường Lên	136	Kotlin	2019-12-21 20:48:26
7	Jahid Hasan	139	Kotlin	2020-05-28 01:53:56
8	Jahid Hasan Imon	139	Kotlin	2020-05-28 01:54:30
9	Adam Rankin	141	Kotlin	2023-05-10 23:28:23
10	Zaw Myat	148	Kotlin	2024-01-15 14:07:08

#	User	Length	Language	Date
1	屏翰 张	1540	Odin	2025-11-10 04:40:59

#	User	Length	Language	Date
1	Chenzhang Hu	6	Perl	2025-09-13 15:33:45
2	Thomas Feld	6	Perl	2025-09-15 15:03:49
3	Adrian Borup	501	Perl	2024-10-27 18:40:27

#	User	Length	Language	Date
1	Susanne Ragnemalm	557	PHP	2024-06-24 19:41:43
2	Dan Dumitriu	1099	PHP	2021-12-02 22:14:49

#	User	Length	Language	Date
1	Hakan Kjellerstrand	154	Prolog	2023-02-06 20:12:15
2	Andriy Zyevakov	831	Prolog	2017-07-16 20:58:10
3	Hadi Qovaizi	32039	Prolog	2016-05-04 15:32:13

#	User	Length	Language	Date
1	Sigurður Jens Albertsson	21	Python 2	2017-12-22 13:25:39
2	Hugrún	21	Python 2	2017-12-28 19:03:50
3	Dmitry Lyubshin	21	Python 2	2018-04-05 04:31:52
4	Li Zhaoqi	21	Python 2	2022-12-16 14:55:09
5	Taylor Rodríguez	21	Python 2	2025-05-10 03:34:58
6	Lars Tveito	22	Python 2	2016-12-04 00:25:45
7	Hidden user	23	Python 2	2017-10-15 13:21:20
8	Jacob Alvarsson	23	Python 2	2020-01-31 18:21:40
9	Árni Bjarnsteinsson	24	Python 2	2019-03-27 13:50:00
10	Yan Kalchevsky	25	Python 2	2017-01-27 21:31:23

#	User	Length	Language	Date
1	Clement Oh	28	Python 3	2023-06-02 20:09:39
2	Alexandre Douard	28	Python 3	2023-09-24 21:18:41
3	Herman Karlsson	32	Python 3	2016-10-20 16:47:53
4	Josenildo Silva	32	Python 3	2016-10-31 21:41:22
5	Rick May	32	Python 3	2017-02-20 21:55:15
6	Mohammed Jasam	32	Python 3	2017-03-13 16:25:29
7	Jakub Jagiello	32	Python 3	2017-08-28 00:25:46
8	César Daniel Cruz Ochoa	32	Python 3	2017-11-17 16:34:18
9	Govind Venugopalan	32	Python 3	2017-11-27 16:38:50
10	Reshab Chhabra	32	Python 3	2017-12-31 07:46:49

#	User	Length	Language	Date
1	Frederik Spang	14	Ruby	2022-09-29 15:50:52
2	Frederik Petersen	14	Ruby	2022-09-30 10:56:40
3	Andreas Severin Hauch Trøstrup	14	Ruby	2022-09-30 10:57:56
4	Thomas Feld	14	Ruby	2022-12-05 14:41:43
5	dick move	14	Ruby	2022-12-06 22:08:44
6	Gustav Elmqvist	19	Ruby	2023-02-18 00:20:22
7	Noah Hessen Bjerke	20	Ruby	2022-12-08 20:33:52
8	Julian Nohr	21	Ruby	2022-12-15 15:37:43
9	Christian Pilegaard Cederquist	21	Ruby	2023-01-12 23:50:20
10	Clement Oh	23	Ruby	2024-03-21 12:41:51

#	User	Length	Language	Date
1	Hidden user	361	Rust	2025-11-14 23:58:39
2	David Aldenbro	368	Rust	2023-10-22 18:08:43
3	Mathias Magnusson	914	Rust	2019-02-04 13:15:23
4	Bas Dirks	1011	Rust	2022-01-15 01:02:14
5	Hidden user	1014	Rust	2024-05-07 19:09:51
6	Joe Blower	1162	Rust	2025-06-19 18:30:03
7	Andreas Prager	1336	Rust	2025-10-20 15:57:21
8	Isak Jägberg	1364	Rust	2019-05-07 19:27:24
9	Kalle Vigren	1627	Rust	2025-11-10 08:16:19
10	Joshua Ji	2211	Rust	2020-11-04 08:01:03

#	User	Length	Language	Date
1	Adam Gustafsson	180	TypeScript	2025-11-10 20:58:47

Solution running time distribution